SBS／L／—PB／TEGDA（TMPTA）光敏体系的透光性和感光特性

本文在研究了ＳＢＳ／Ｌ／－ＰＢ／ＴＥＧＤＡ（ＴＭＰＴＡ）均相光敏体系对特定光源（低压汞灯，λ＝２５４ｎｍ）发射光吸收的基础上，按剩余膜产率（Ｙ）绘制出感光特性曲线（Ｙ－ｔ）确定出Ｙ随Ｌ－ＰＢ和ＴＥＧＤＡ（或ＴＭＰＴＡ）用量变化的规律，求算了优选体系的量子产率，以剩余膜产率和灰梯度尺法测定了上述体系的相对感度。     

EDTA直接法测定Ln（NO3）3—邻二氮菲—氟脲嘧啶中稀土含量的研究

研究了在配体邻二氮菲及氟脲嘧啶存在下，直接用ＥＤＴＡ容量法测定稀土硝酸盐—邻二氮菲—氟脲嘧啶配合物（［Ｌｎ（Ｐｈｅｎ）２（Ｆｕ（ＮＯ３）］（ＮＯ３）２）（Ｌｎ＝稀土元素）［１］，终点颜色变化敏锐，结果准确。     

稀土（La，Pr，Nd，Sm，Eu，Gd，Dy）三元配合物的合成及抗菌研究

稀土（Ｌａ，Ｐｒ，Ｎｄ，Ｓｍ，Ｅｕ，Ｇｄ，Ｄｙ）三元配合物的合成及抗菌研究本文报道了合成稀土与２，２＇－联吡啶（ｂｉｐｙ）、１，１０－邻菲啉（ｐｈｅｎ）的三元固态配合物的方法，通过元素分析、ＩＲ谱，ＴＧＡ谱和摩尔电导对该系列配合物进行了表征，并作了初...     

缺位K10H5（Ln（VW10O37）2）配合物的合成和性质研究

本文首次报道了缺位Ｋ１０Ｈ５（Ｌｎ（ＶＷ１０Ｏ３７）２ＸＨ２Ｏ（Ｌｎ＝Ｌａ＾３＋，Ｃｅ＾３＋，Ｐｒ＾３＋，Ｎｄ＾３＋，Ｓｍ＾３＋，Ｅｕ＾３＋，Ｇｄ＾３＋，Ｔｂ＾３＋，Ｄｒ＾３＋，Ｙｂ＾＋）十余种配合物的合成方法，元素组成分析与理论值相符，利用ＩＲ、ＵＶ，ＸＲＤ和ＴＧ－ＤＴＡ对配合物进行了表征，配合物的热解性质研究表明，其分解温度为４００～４５０℃还研究了配合物在水溶液中的稳定性。     

7—（苯偶氮）—8—羟基喹啉—5—磺酸钠光度法测定铝

研究了７－（苯偶氮）－８－羟基喹啉－５－磺酸钠光度法测定铝（Ⅲ）的实验条件及反应机理。该显色剂在ＰＨ４．２水溶液中呈红色，λｍａｘ＝５２０ｎｍ，与铝（Ⅲ）形成配合物呈黄色。其配合比为１：３，最大吸收峰为λｍａｘ＝４３５ｎｍ。     

2,6—二甲酸吡啶铕,镧配合物发光性能的研究

合成了一系列不同Ｅｕ、Ｌａ比的２，６－二甲酸吡啶配合物，经元素分析，热量－差热分析，确定其组成为Ｒｕ２Ｌ３．７Ｈ２Ｏ（Ｌ＝Ｃ５Ｈ３Ｎ（ＣＯＯ）＾２－２，ＲＥ＝Ｅｕ、Ｌａ）。     

SiO2凝胶玻璃中Eu(Ⅲ)和Tb(Ⅲ)芳香羧酸配合物原位合成及其荧光性质

稀土芳香羧酸配合物或难溶于溶胶－凝胶先驱液,或产生化学分解,而难以掺入凝胶玻璃,本研究应用原位合成的新型工艺,在ＳｉＯ２凝胶玻璃基质中均匀掺入稀土芳香羧酸配合物,先驱液中同时引入稀土离子（Ｅｕ（Ⅲ）和Ｔｂ（Ⅲ）和Ｔｂ（Ⅲ）和芳香羧酸,在严格控制ｐＨ值哐进行适当的热处理条件下,于透明的块状凝胶玻璃中原位合成了Ｅｕ（Ⅲ）和Ｔｂ（Ⅲ）的芳香羧酸配合物,并经红外和荧光光谱证实,研究了原位配合物的形成条件及     

新试剂6—Me—BTAEB与Cu（Ⅱ）显色反应的研究与应用

研究了新显色剂６－Ｍｅ－ＢＴＡＥＢ与铜的显色反应，试验结果表明，在ｐＨ＝３．０￣６．５范围内及乙醇存在下，Ｃｕ（Ⅱ）与６－Ｍｅ－ＢＴＡＥＢ形成一稳定的配合物，最大吸收波长为６５５ｎｍ，表现摩尔吸光系数为６．００×１０＾４Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，铜浓度在０￣２５ｍｇ／２５ｍＬ范围内服从比耳定律，该方法应用于铝合金和工业污水中铜的测定，结果令人满意。     

福美双分光光度法快速测定微量铜

在碱性条件下, Ｃｕ ? 与福美双（ Ｎ Ｃ Ｈ３ Ｃ Ｈ３ Ｃ Ｓ Ｓ Ｓ Ｃ Ｓ Ｃ Ｈ３ Ｃ Ｈ３ ） 形成稳定的桔红色配合物,配合物的λｍ ａｘ ＝ ４５２ ｎ ｍ , 表观摩尔吸光系数ε＝ １ ．２ ×１０ ４ 。铜含量在０ ～１０ μｇ／ ｍ Ｌ 范围内符合比耳定律。     

硫代脯氨酸铕、镝固体配合物的合成与性质表征

通过稀土硝酸盐与硫代脯氨酸反应,制得了两种新的稀土硫代脯氨酸固体配合物,它们分别是：Ｅｕ（ｔｃＨ）３（ＮＯ３）３·ＣＨ３ＯＨ和Ｄｙ（ｔｃＨ）３（ＮＯ３）３·２ＣＨ３ＯＨ。用化学分析、元素分析、电导测定、热重分析、差热分析、红外光谱等确定配合物的组成,讨论了金属－配体的化学键性质。     

稀土三元配合物的合成、表征及其抗菌活性研究

以稀土氯化物、联咪唑和噻吩甲酰三氟丙酮为原料制备了一系列新型稀土三元配合物Ln(TTA)3L(Ln=Nd3+,Eu3+,Er3+;TTA=噻吩甲酰三氟丙酮;L=联咪唑),抗菌实验结果显示,三元配合物抑菌圈直径为12～17 mm,对大肠杆菌、金黄色葡萄球菌具有一定的抑制作用,且对大肠杆菌的抑制效果较好。     

Tb（OPr^i）x（TTA）y／PMMA光致发光材料的研究

在N_2保护下,将配体α-噻吩甲酰三氟丙酮(HTTA)引入三异丙氧基铽中,合成了稀土配合物Tb(OPr~i)_x(TTA)_y,并与甲基丙烯酸甲酯(MMA)单体通过本体聚合制备Tb(OPr~i)_x(TTA)_y/PM- MA材料,用FT-IR、UV、FS等对其进行表征。结果表明,Tb(OPr~i)_x(TTA)_y/PMMA材料在紫外区有很强的吸收,在紫外波长激发下能发射强的Tb~(3 )特征荧光,其中含Tb(OPr~i)(TTA)_2和Tb(TTA)_3的聚合物的荧光发射强度相当,但比含Tb(OPr~i)_3或Tb(OPr~i)_2(TTA)的聚合物荧光强度高一个数量级。     

镧、钇掺杂铕-樟脑酸-1,10-菲咯啉三元配合物的合成及荧光性能

实验合成了单核铕-樟脑酸-1,10-菲咯啉三元配合物和La、Y掺杂异核铕-樟脑酸-1,10-菲咯啉三元配合物。通过配位滴定、元素分析和红外光谱等测试,确定其组成为RE2(CA)3(phen)2(RE为Eu、La和Y;CA为樟脑酸;phen为1,10-菲咯啉);通过三维荧光光谱图确定其最佳激发波长为330.0 nm,即在330.0 nm激发光下的发射光谱图中均显示出Eu3+离子5D0→7F0(579nm),5D0→7F1(594 nm)和5D0→7F2(612 nm)等三条特征谱线,其中5D0→7F2(612 nm)为最强跃迁峰。荧光强度变化研究表明,适量镧和钇离子的掺杂并没有降低铕离子的荧光强度,说明镧和钇对铕离子荧光发射有敏化作用。     

LUMINESCENCE STUDY OF Eu( III) COMPLEXES EXTRACTED IN THE ORGANIC PHASE

Luminescence lifetimes have been measured for Eu(III) extracted into benzene solutions. The extrac-tants were HDEHP, HTTA, and mixtures of HTTA with crown ethers, TBP, and TOPO. The results were consistent with no residual hydration for Eu(DEHP)₃, and three molecules of hydration for Eu(TTA) ₃,. The Eu(TTA) ₃,-(TOPO)? _n (n = 1,2) complexes have one water molecule or less. The hydration numbers from the luminescence lifetimes compare well with the values from Karl Fischer titrations. The hydration of the crown ether complexes can be related to the degree of steric hindrance by the aliphatic or aromatic groups attached to the crown ethers.     

Synthesis and photoluminescent properties of four novel trinuclear europium complexes based on two tris-β-diketones ligands

Four novel trinuclear europium complexes with two tris-β-diketones ligands have been synthesized, and the chemical structures of ligands and complexes were characterized by FT-IR, UV-vis, ¹H NMR, ¹³C NMR, XRD, ESI-MS, and element analysis. The potoluminescent properties of trinuclear complexes in solid and THF solution were investigated. All trinuclear complexes exhibited strong relative luminescent intensity and long luminescent lifetime. Meanwhile, the results of lifetime decay curves indicated that only one chemical environment existed around the europium ion. The intrinsic luminescent quantum yields (Φ_LN) and experimental intensity parameters of trinuclear complexes were obtained based on the emission spectra and luminescent lifetime of ⁵D₀ excited state for europium ion. All trinuclear europium complexes exhibited relative high intrinsic luminescent yield and intensity parameters. Especially, due to the contribution of addition two europium lumophors in trinuclear europium complexes, the trinuclear complexes containing TTA exhibited much longer lifetime and higher intrinsic quantum yield than mononuclear europium complex Eu(TTA)₃phen.     

含偶氮苯8-羟基喹啉稀土配合物的合成与表征

合成了三种含偶氮苯8-羟基喹啉稀土配合物,通过元素分析、红外、紫外、荧光光谱及热分析,确定了三种配合物的组成为REL3（RE=Sm,Eu,La）,三种配合物在550～650 nm都能产生荧光,峰值（λmax）分别为569,559,552 nm。     

D-氨基葡萄糖与硝酸铕、铽配合物的合成及光谱分析

用D-氨基葡萄糖盐酸盐分别与硝酸铕和硝酸铽反应,制备了氨基葡萄糖-铕、氨基葡萄糖-铽两种配合物,并研究了配合物的红外光谱、紫外光谱和X射线光电子能谱(XPS)。配合物紫外的λmax发生了明显紫移,在远IR区Glu-Eu配合物中出现的新的吸收峰206 cm-1和254 cm-1可分别归属于νEu-O和νEu-N,在Glu-Tb配合物中出现的新的吸收峰203 cm-1和252 cm-1可分别归属于νTb-O和νTb-N,XPS表明氨基葡萄糖-Ln中氨基葡萄糖的N和O原子上的电子云密度减少,孤对电子转移,稀土离子得到电子。     

Polypyridyl CoII-Curcumin Complexes as Photoactivated Anticancer and Antibacterial Agents

Four new Co^II complexes, [Co(bpy)₂(acac)]Cl ( 1 ), [Co(phen)₂(acac)]Cl ( 2 ), [Co(bpy)₂(cur)]Cl ( 3 ), [Co(phen)₂(cur)]Cl ( 4 ), where bpy=2,2’-bipyridine ( 1 and 3 ), phen=1,10-phenanthroline ( 2 and 4 ), acac = acetylacetonate ( 1 and 2 ), cur=curcumin monoanion ( 3 and 4 ) have been designed, synthesized and fully characterized. The X-ray crystal structures of 1 and 2 indicated that the CoN₄O₂ core has a distorted octahedral geometry. The photoactivity of these complexes was tuned by varying the π conjugation in the ligands. Curcumin complexes 3 and 4 had an intense absorption band near 435 nm, which made them useful as visible-light photodynamic therapy agents; they also showed fluorescence with λ_em≈565 nm. This fluorescence was useful for studying their intracellular uptake and localization in MCF-7 breast cancer cells. The acetylacetonate complexes ( 1 and 2 ) were used as control complexes to understand the role of curcumin. The white-light-triggered anticancer profiles of the cytosol targeting complexes 3 and 4 were investigated in detail. These non-dark toxic complexes displayed significant apoptotic photo-cytotoxicity (under visible light) against MCF-7 cells through ROS generation. The control complexes 1 and 2 did not induce significant cell death in the light or dark. Interestingly, 1-4 produced a remarkable antibacterial response upon light exposure. Overall, the reported results here can increase the boundary of the Co^II-based anticancer and antibacterial drug development.     

稀土配合物及其共聚物的合成与性能研究

以丙烯酸(HAA)、甲基丙烯酸(HMA)及1,10-邻菲罗啉(Phen)为配体与氧化铕(Eu2O3)反应得到二元配合物Eu(AA)3、Eu(MA)3和三元配合物Eu(AA)3Phen、Eu(MA)3Phen。将生成的配合物与HMA和甲基丙烯酸甲酯(MMA)共聚,得到一系列三元共聚物。通过元素分析、红外光谱、荧光光谱和热分析对配合物进行了分析与表征,发现配合物具有良好的荧光强度和热稳定性。三元配合物的荧光强度相对于二元配合物有显著提高。共聚物可发射Eu3+的特征荧光,荧光强度随配合物含量的增加而增加,且未发生浓度猝灭现象。三元配合物在反应单体MMA和HMA中的溶解度低于二元配合物,从而使在最大溶解度下二元配合物与反应单体生成共聚物的荧光强度高于相应的三元配合物与反应单体生成的共聚物。     

Fluorescence properties of ternary complexes of polymer-bond triphenylphosphine,triphenylarsine, triphenylstibine,and triphenylbismuthine,rare earth metal ions,and thenoyltrifluoroacetone

Rare earth metal ions containing polymer ternary complexes were synthesized and characterized. The functional polymers investigated were polymer-bond triphenylphosphine (PBDP), polymer-bond triphenylarsine (PBDAs), polymer-bond triphenylstibine (PBDSb), and polymer-bond triphenylbismuthine (PBDBi) as polymer ligands. Several substances, such as thenoyltrifluoroacetone (TTA), and 8-hydroxyquinoline (oxin), phenanthroline (phen) were used as low molecular weight ligands. The results show that TTA is the best low molecular weight ligand among them. The fluorescence properties of synthesized complexes were investigated; PBDAs is a better polymer ternary complex that possesses stronger fluorescence intensity coordinated with any low molecular weight ligand. The fluorescence lifetimes of Eu³⁺-containing polymer ternary complexes are between 0.350 and 0.469 MS. The reaction conditions of the formation and stability of rare earth metal ions–polymer–TTA ternary complexes are discussed. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 68: 1605–1611, 1998